If you know how to code it is always always always helpful to have more eyes on finding bugs or performance optimizations in the code.

Also, writing more tests, battle test it with a test-evironment, create large-scale gatling simulators, answer to Issues on the github.

We always always always need products /setups to make bitcoin more accessible and easier to use. It's never easy enough to setup a node for non-tech people, never. (Pre-made products with everything installed, youtube videos on how to setup, blog articles on how to setup etc etc). Node-launcher has not been developed in 4 years.

If you're not a coder you also helping Bitcoin by simply running a node and getting the word out. Get people to download a wallet and pay for pizza together. Introduce people to SN.